Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
根的初生结构由外至内可分为()、()和()三部分。对无机态养分的吸收主要有()、()、()、()。...
Friday, January 26, 2024
广金钱草种子繁殖时,必须进行种子处理。处理方法主要是()。...
Sunday, February 4, 2024
作物生育期长短不同,主要是由作物的遗传性和所处的环境条件所决定的...
Thursday, September 15, 2022
Tuesday, June 27, 2023
什么是果树自根苗?其形态和生育特点与实生苗有什么差别?...
Monday, September 12, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
在前茬作物的生育后期,在其行间播种或移栽其它作物的种植方式,叫(...
Thursday, September 15, 2022
Monday, September 12, 2022
Monday, September 12, 2022
Saturday, February 3, 2024
Thursday, September 15, 2022
茎按生长习性不同可分为直立茎、缠绕茎、匍匐茎、()。有缠绕茎和攀...
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022